Unit 9 IO/ File

The address of the next instruction to be executed by the current process is provided by the:

• CPU registers

• Program counter

• Process stack

• Pipe

Mutual exclusion can be provided by the:

• mutex locks

• binary semaphores

• both mutex locks and binary semaphores

Which process can be affected by other processes executing in the system?

• cooperating process

• child process

• parent process

• init process

Message passing system allows processes to:

• communicate with one another without resorting to shared data

• • communicate with one another by resorting to shared data

• share data

• name the recipient or sender of the message

The degree of multiprogramming is:

• the number of processes executed per unit time

• the number of processes in the ready queue

• the number of processes in the I/O queue

• the number of processes in memory

The systems which allow only one process execution at a time, are called:

• uniprogramming systems

• uniprocessing systems

• unitasking systems

Interprocess communication:

• allows processes to communicate and synchronize their actions when using the same address space

• allows processes to communicate and synchronize their actions without using the same address space

• allows the processes to only synchronize their actions without communication

When the process issues an I/O request:

• It is placed in an I/O queue

• It is placed in a waiting queue

• It is placed in the Job queue

Which one of the following is a synchronization tool?

• thread

• pipe

• semaphore

If all processes are I/O bound, the ready queue will almost always be ______ and the Short term Scheduler will have a ______ to do.

• full, little

• full, lot

• empty, lot